code: def gpu_ram_used_fast(self, gpu_handle):
      return self.pynvml.nvmlDeviceGetMemoryInfo(gpu_handle).used
  
imports: from IPython import get_ipython
  from collections import namedtuple
  import datetime
  import gc
  import logging
  import os
  import psutil
  import random
  import sys
  import threading
  import time
label_desc: Use image node_id 6 for calling the CellLogger obj's underlying member method code with example usage: obj.gpu_ram_used_fast(gpu_handle) and returns: self